Let me fully understand what you are saying. I am picturing: Client Switch ----- ISP1-----ISP2-----ISP3-----Client Switch
Is that right? So you have ISP1,2, and 3 all doing Q-Q ? On Wed, Sep 9, 2009 at 12:40 PM, Justin Guagliata <[email protected]> wrote: > Joe, > > What if you have a link that spans 3 providers, all of which are performing > QnQ. Will it be possible to l2tunnel all the way across the link span. It > seems like the l2tunnel can't survive multiple hops. If one provider is > involved, I can span that fine, as soon as I add a second and try to use > l2tunnel, the provider in the middle goes errdisable. > > > On Wed, Sep 9, 2009 at 12:26 PM, Joe Astorino <[email protected]>wrote: > >> Also, check out this blog post, it may help you understand that particular >> error: http://ipexpert.ccieblog.com/2009/07/29/l2-tunneling/ >> >> >> On Wed, Sep 9, 2009 at 12:24 PM, Joe Astorino <[email protected]>wrote: >> >>> Typically you see this when a port configured for "switchport mode >>> dot1q-tunnel" and "l2protocol-tunnel" is receiving an l2protocol-tunnel >>> frame from another switch that it is connected to. Make sure your customer >>> is not configuring l2protocol-tunnel anywhere on their end, and is simply >>> trunking to you. >>> >>> On Wed, Sep 9, 2009 at 10:20 AM, Justin Guagliata <[email protected]>wrote: >>> >>>> I have a link with a provider spanning two locations. The provider is >>>> running QinQ and we have a trunk setup across the link. Recently we had the >>>> requirement to start doing QnQ for a few "customers" so we attempted to do >>>> QinQ for our downstream neighbors. The problem is, when our downstream >>>> "customer" plugs in one switch, our port on the provider side goes into >>>> errdisable due to l2ptguard. >>>> >>>> I believe if the customer plugs a switch on the other side, the link >>>> will come up and be fine. The problem is, we can't afford to lose our link >>>> because the customer had a switch die or is missing a switch on one side >>>> for >>>> some other reason. >>>> >>>> The only solution i can think up is to have the provider disable >>>> errdiable for the l2ptguard cause. >>>> >>>> Does anyone else have any ideas, suggestion? >>>> >>>> Thanks, >>>> >>>> Justin >>>> >>>> _______________________________________________ >>>> For more information regarding industry leading CCIE Lab training, >>>> please visit www.ipexpert.com >>>> >>>> >>> >>> >>> -- >>> Regards, >>> >>> Joe Astorino - CCIE #24347 R&S >>> Technical Instructor - IPexpert, Inc. >>> Cell: +1.586.212.6107 >>> Fax: +1.810.454.0130 >>> Mailto: [email protected] >>> >> >> >> >> -- >> Regards, >> >> Joe Astorino - CCIE #24347 R&S >> Technical Instructor - IPexpert, Inc. >> Cell: +1.586.212.6107 >> Fax: +1.810.454.0130 >> Mailto: [email protected] >> > > -- Regards, Joe Astorino - CCIE #24347 R&S Technical Instructor - IPexpert, Inc. Cell: +1.586.212.6107 Fax: +1.810.454.0130 Mailto: [email protected]
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